形容词
中文翻译：有效的
同义词：
['efficacious', 'efficient', 'productive']
例句：
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1. The new policy is expected to be effective in reducing pollution.
预计新政策能有效减少污染。
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2. The manager's suggestion was very effective in solving the problem.
经理的建议非常有效地解决了这个问题。
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3. The new software is expected to be effective in improving productivity.
预计新软件能提高生产效率。